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. 2024 Mar 29;15:2766. doi: 10.1038/s41467-024-46774-y

Fig. 1. Fabrication of biopolymer-based bicontinuous hydrogels.

Fig. 1

a Schematic of bicontinuous hydrogel fabrication through the mixing of components to form gelatin (crosslinked with transglutaminase) and hyaluronic acid (crosslinked with adamantane (AD-HA) and cyclodextrin (CD-HA) guest-host (GH) complexes) hydrogels. The bicontinuous structure evolves through initial network immiscibility and then dynamic assembly and stabilization over hours. b Representative confocal fluorescent images of hydrogels (gelatin: green) where increasing GH content results in gelatin-rich (GR) and gelatin-poor (GP) domains. Scale bar = 50 μm. c Representative rheological time sweeps (storage (G’) and loss (G”) modulus, 1 Hz, 1% strain) illustrating the kinetics of gelation. d Representative macroscopic images (Scale bar = 1 mm), and e quantified G’, G”, and tan (δ) after gelation (150 min) for hydrogels containing various GH content (0, 1, 3 wt%). n = 4 (0,1%) or 5 (3%) hydrogels per condition. G’: n.s. indicates no statistical significance; G”: 0% vs. 1% ***p = 0.0001; 1% vs. 3% ***p = 0.0009; tan(δ): 0% vs. 3%, 1% vs. 3% ****p 0.0001; one-way ANOVA with Tukey post hoc. Data are mean ± s.d. Source data for (c, e) provided as a source data file.